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73 lines
1.4 KiB
Perl
73 lines
1.4 KiB
Perl
#!/usr/bin/env perl
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##
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## Author......: See docs/credits.txt
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## License.....: MIT
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##
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use strict;
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use warnings;
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use MIME::Base64 qw (encode_base64);
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use Digest::SHA qw (sha512);
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use Encode;
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sub module_constraints { [[0, 64], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }
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sub module_generate_hash
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{
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my $word = shift;
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my $salt = shift;
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my $iter = shift // 100000;
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my $tmp = sha512 ($salt . encode ("UTF-16LE", $word));
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for (my $i = 0; $i < $iter; $i++)
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{
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my $num32 = pack ("L", $i);
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$tmp = sha512 ($tmp . $num32);
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}
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my $salt_b64 = encode_base64 ($salt, "");
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my $digest_b64 = encode_base64 ($tmp, "");
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my $hash = sprintf ("\$office\$%d\$0\$%d\$%s\$%s", 2016, $iter, $salt_b64, $digest_b64);
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return $hash;
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}
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sub module_verify_hash
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{
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my $line = shift;
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my ($hash, $word) = split ":", $line;
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return unless defined $hash;
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return unless defined $word;
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my @data = split ('\$', $hash);
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return unless scalar @data == 7;
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return unless (shift @data eq 'office');
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return unless (shift @data eq '2016');
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return unless (shift @data eq '0');
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my $iter = shift @data;
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my $salt = shift @data;
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my $digest = shift @data;
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return unless defined $iter;
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return unless defined $salt;
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return unless defined $digest;
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return unless length ($salt) == 24;
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return unless length ($digest) == 88;
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my $new_hash = module_generate_hash ($word, $salt, $iter);
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return ($new_hash, $word);
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}
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1;
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